refactor: drop usage of dummy arguments for multi-inheritance

src/ui/components/abstract/ScriptObject.ts

@@ -11,8 +11,8 @@ class ScriptObject extends FrameScriptObject {
 
   _name: string | null;
 
-  constructor(_dummy: unknown) {
-    super(_dummy);
+  constructor(..._args: unknown[]) {
+    super(..._args);
 
     this._name = null;
   }

src/ui/components/abstract/ScriptRegion.ts

@@ -18,8 +18,8 @@ class ScriptRegion extends multipleClasses(ScriptObject, LayoutFrame) {
 
   _parent: Frame | null;
 
-  constructor(_dummy: unknown) {
-    super(_dummy);
+  constructor(..._args: unknown[]) {
+    super(_args);
 
     this._parent = null;
   }

src/ui/components/simple/Frame.ts

@@ -66,7 +66,7 @@ class Frame extends ScriptRegion {
   strataLink: LinkedListLink<this>;
 
   constructor(parent: Frame | null) {
-    super(null);
+    super();
 
     this.id = 0;
     this.flags = 0;
@@ -189,7 +189,7 @@ class Frame extends ScriptRegion {
     }
   }
 
-  // TODO: Seems to be necessary with split getter/setters + inheritance
+  // Note: Seems to be necessary with split getter/setters + inheritance
   get parent() {
     return this._parent;
   }

src/ui/components/simple/Region.ts

@@ -5,7 +5,7 @@ import { LinkedListLink } from '../../../utils';
 
 import Frame from './Frame';
 
-abstract class Region extends ScriptRegion {
+class Region extends ScriptRegion {
   drawLayerType: DrawLayerType | null;
   shown: boolean;
   visible: boolean;
@@ -17,7 +17,7 @@ abstract class Region extends ScriptRegion {
   regionLink: LinkedListLink<this>;
 
   constructor(frame: Frame, drawLayerType: DrawLayerType, show: boolean) {
-    super(null);
+    super();
 
     this.drawLayerType = null;
     this.shown = false;
@@ -34,7 +34,9 @@ abstract class Region extends ScriptRegion {
     }
   }
 
-  abstract draw(_batch: RenderBatch): void;
+  draw(_batch: RenderBatch) {
+    throw new Error(`${this.constructor.name} must implement 'draw'`);
+  }
 
   onRegionChanged() {
     // TODO: Implementation

src/ui/scripting/FrameScriptObject.ts

@@ -32,7 +32,7 @@ class FrameScriptObject {
   luaRef: lua_Ref | null;
   scripts: ScriptRegistry;
 
-  constructor(_dummy: unknown) {
+  constructor(..._args: unknown[]) {
     this.luaRef = null;
 
     this.scripts = new ScriptRegistry();

src/utils/inheritance.ts

@@ -16,9 +16,9 @@ const multipleClasses = <
   }
 
   const cls = class extends base {
-    constructor(..._args: any[]) {
+    constructor(...args: any[]) {
       // Create an instance of the base class
-      super();
+      super(...args);
 
       // Construct temporary throw-away instance of other class and assign own properties
       // Warning: using `this` as a reference in other class' constructor will not work correctly